The SuperpavePG binder specification looked for tests which would closely simulate field performance. Hotmix asphalt binder experiences significant aging during the manufacturing and laying process. Investigating this phenomenon within a laboratory environment, with a repeatable and simple test is very useful within the design process.

The Rolling Thin Film Oven (RTFO) test is used to measure the effect of heat and air on a moving film of semi-solid asphalt binder. The results of this treatment are determined from measurements of the binder properties before and after the test.

Repeatability of the test is directly related to the accuracy with which the oven temperature can be maintained and the reproducibility of the thermal rise time of the system. The invention of RTFO by Cooper is led to the present day AASHTO,ASTM and EN standards for Rolling Thin Film Oven test.

Key Features

Super accurate P.I.D. controller

Low thermal mass RTD

Over temperature safety cut-out

Double walled temperature cabinet

Unique temperature control suppression

Made in California

System Elements

Long life sustainable bearings to overcome temperature fluctuation

Integrated unique controller which allows for the quickest response time without excessive overshoot

Testing jars (full set) supplied according to standard requirements

Stainless steel interior

Integral dual 4 digit LED displays allows viewing of the process temperature and set point simultaneously

Heavy duty “flush fit” door locking system

Construction

Double-walled construction.

16-gauge welded steel exterior.

18-gauge corrosion resistant stainless steel interior

Insulation mm (inch)

89 mm (3.5) of high density fiberglass insulation

Controller

Programmable microprocessor UL listed

Temperature Display

Measured Temperature – 4 digit red LEDs

Temperature Set Point – 4 digit green LEDs

Thermal Protection

Prevents oven from overheating in the event of control failure

Temperature Range

Ambient to 200°C (390°F)

Vents

Double exhaust vents for dissipation of expended volatile from specimen